66237001 has 2 divisors, whose sum is σ = 66237002. Its totient is φ = 66237000.

The previous prime is 66236971. The next prime is 66237037. The reversal of 66237001 is 10073266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55353600 + 10883401 = 7440^2 + 3299^2 .

It is a cyclic number.

It is not a de Polignac number, because 66237001 - 2⁷ = 66236873 is a prime.

It is not a weakly prime, because it can be changed into another prime (66237701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33118500 + 33118501.

It is an arithmetic number, because the mean of its divisors is an integer number (33118501).

Almost surely, 2^66237001 is an apocalyptic number.

It is an amenable number.

66237001 is a deficient number, since it is larger than the sum of its proper divisors (1).

66237001 is an equidigital number, since it uses as much as digits as its factorization.

66237001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 66237001 is about 8138.6117366539. The cubic root of 66237001 is about 404.6071504318.

The spelling of 66237001 in words is "sixty-six million, two hundred thirty-seven thousand, one".